[Mullins]

I haven't tried an EDY but I tried a Mares Nemo earlier today and have previously used a D3. Until it broke, of course. For me the alarm is the most important function as I use it to judge when to do a mouthfill. I don't wear a mask any more so I can't see a readout while diving. Unfortunately the Nemo's alarm was even quieter than the D3s, if that's possible. Plus it's only a couple of brief beeps. The fresh water setting was handy, as we were in a lake, and the 4-second sampling interval was not so handy (though I didn't actually get a chance to download my dives). Other than that, all the standard stuff like surface interval, max depth, min temp etc was fine. So functionally there appeared to be bugger-all difference between the Nemo and the D3 despite the whopping differnce in price. Hopefully the EDY has a better alarm.

P.S. - there was one interesting feature of the Nemo; you can set the alarm to sound every X meters, so you could get a (very faint) beep at every, say, 10m to let you keep track of your dive. Might be useful.